Join Date: Jun 2010
Location: NW,Oregon Coast
Mentioned: 19 Post(s)
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Quoted: 1134 Post(s)
Agree, just get a 7 speed freewheel , but i question where that added cog will be used? have a 13-28 and want a 34t granny gear, then the new cog is added, in the middle replacing a 17 with a 16 and an 18 will be less significant .
gap between cogs narrows , 7 speed goes in a 126 dropout overlocknut width so that need not change..
Adding #8 forced the frame specs out to 130.. its 7 speed spacing add 1 more ,
9 otoh further compresses the distance between cogs, without making the overall width much more .